Lighting apparatus having light emitting diodes for light source

Abstract

A down-light has a main body, a substrate, a plurality of LEDs, a reflector, a central boss, a central screw and peripheral screws. The main body has a mounting area. The substrate having LEDs is assembled in the mounting area. The reflector is attached to the main body with the substrate interposed therebetween, and reflects light emitted from the LEDs. The central boss is formed on the mounting area to correspond to a central part of the substrate. The central screw fixes the central part of the substrate to the central boss from the reflector side. Peripheral screws fix the substrate to the main body by pulling the reflector from the main body side.

1 . A lighting apparatus comprising:
 a main body with heat conductivity, which has a mounting area formed in a shape of a recess;   a substrate mounted on the mounting area;   a plurality of light emitting elements mounted on the substrate; and   a reflector mounted on the main body with the substrate interposed therebetween and configured to reflect light emitted from the light emitting elements, thereby controlling light distribution,   a central boss formed on the mounting area so as to correspond to a central part of the substrate;   central fixing means for fixing the central part of the substrate to the central boss from the reflector side; and   peripheral fixing means for fixing the substrate to the main body by pulling the reflector from the main body side.   
     
     
         2 . The lighting apparatus according to  claim 1 , further comprising:
 a plurality of peripheral bosses disposed around the central boss and supporting a part of the substrate where is provided between its central part and its periphery part,   wherein the peripheral fixing means fixes the substrate to the main body in positions of the peripheral bosses.   
     
     
         3 . The lighting apparatus according to  claim 1 , further comprising:
 a light distributor mounted along the periphery of the mounting area of the main body so that heat is transferred.   
     
     
         4 . The lighting apparatus according to  claim 1 , wherein
 the mounting area has an engagement block on a sidewall formed along an internal circumference of the mounting area, the engagement block having a recess in the direction of a circumference around the central boss, and   the substrate has a pawl that fits into the recess of the engagement block.   
     
     
         5 . The lighting apparatus according to  claim 1 , wherein
 the mounting area has a plurality of pads arranged on an area which are corresponding to the light emitting elements, and   the pads are contact with the back of the substrate.